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  • Oeselaspis pustulata PATTEN, 1931

    Images:

    oilshale

    By oilshale (edited)

    Taxonomy

    Ostracoderm (a bony-armored jawless fish)

    Kingdom: Animalia
    Phylum: Chordata
    Class: Cephalaspidomorphi
    Order: Tremataspidiformes
    Family: Tremataspididae
    Genus: Oeselaspis
    Species: Oeselaspis pustulata
    Author Citation PATTEN, 1931

    Geological Time Scale

    Eon: Phanerozoic
    Era: Paleozoic
    Period: Silurian
    Sub Period: None
    Epoch: Middle
    International Age: uppermost Wenlock: upper Homerian

    Stratigraphy

    Rootsiküla Formation
    Viita Member

    Provenance

    Acquired by: Purchase/Trade

    Location

    Rootsiküla
    Saare
    Saaremaa Island
    Estonia

    Comments

    References:

    George M. Robertson (1935): Oeselaspis, a new genus of ostracoderm. Am J Sci May 1, 1935 Series 5 Vol. 29:453-461

    Qu, Q., Blom, H., Sanchez, S. and Ahlberg, P. (2015): Three-dimensional virtual histology of Silurian osteostracan scales revealed by synchrotron radiation microtomography. J. Morphol.2015 Aug;276(8):873-88. doi: 10.1002/jmor.20386. Epub 2015 Mar 21.

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    Fossil-Hound

    In other words it's a Placoderm. Cool find. B)

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    oilshale
    5 hours ago, jsnrice said:

    In other words it's a Placoderm. Cool find. B)

    Almost ;)

    The subphylum "Vertebrata" consist of the superclass "Agnatha" (this is where Oeselaspis belongs to) and the superclass "Gnathostomata" (this is where the Placodermi belong to). Relatives, yes, but more a second cousin, I would say...

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    Fossil-Hound

    A Placoderm. If it looks like a duck (i.e. armor) then it's a duck. :rofl:

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